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Finding the Fourth Proportional to 867,805.76, 1,301,832.32 and 268,813.92

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Solution

The fourth proportional to 867,805.76, 1,301,832.32 and 268,813.92 is: 403,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,805.76 : 1,301,832.32 = 268,813.92 : x
  2. Step 2: Convert to fraction form
    867,805.76/1,301,832.32 = 268,813.92/x
  3. Step 3: Cross multiply
    867,805.76x = 1,301,832.32 × 268,813.92
  4. Step 4: Simplify right side
    867,805.76x = 349,950,649,121.89
  5. Step 5: Solve for x
    x = 349,950,649,121.89/867,805.76
  6. Step 6: Final answer
    x = 403,259.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.